Rotary ultrasonic compound incremental forming device and method based on real-time feedback

Abstract

The invention discloses a rotary ultrasonic compound incremental forming device and method based on real-time feedback. The rotary ultrasonic compound incremental forming device comprises a plate incremental forming fixture unit. A rotary ultrasonic cutter handle machining unit is arranged above the plate incremental forming fixture unit. The rotary ultrasonic utter handle machining unit comprises a machining main shaft which is connected with an installation taper shank. An ultrasonic energy exchanger is arranged in a cylindrical hole of the installation taper shank. An electrode copper sheet of the ultrasonic energy exchanger is connected with a receiving coil of a magnetic receiver through a wire, a magnetic generator is arranged opposite to the magnetic receiver, and the magnetic generator is connected with the magnetic receiver. The ultrasonic energy exchanger is connected with an amplitude transformer, and the amplitude transformer is connected with a forming tool head. An annular groove is formed in the outer circle of the amplitude transformer, the annular groove is used for sticking a strain gage serving as a power sensor, the strain gage is connected with a signal acquiring and emitting module, and the signal acquiring and emitting module is connected with an information processing and displaying device.

Description

technical field [0001] The invention relates to a rotary ultrasonic compound progressive forming device and method which simultaneously applies ultrasonic vibration and tool head rotation to a thin metal plate and has a real-time feedback function, and belongs to the technical field of plastic processing. Background technique [0002] As an emerging flexible template-less forming technology, the incremental forming process adopts the idea of ​​"layered manufacturing", does not require molds, and has been optimized in terms of development time and economic cost, especially in small-batch, customized production. The proposal of ultrasonic-assisted incremental forming is mainly aimed at the bottom torsion, springback phenomenon and other forming defects of incremental forming when processing thin plate parts, so as to achieve the purpose of improving the forming geometric accuracy and surface quality. [0003] Chinese patent document CN104690138A discloses "A Single-point Progr...

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Problems solved by technology

[0004] First of all, the existing ultrasonic-assisted progressive forming technology is a wired connection, which has a large energy loss and increases the instability of the work, which is not conducive to the introduction of the tool head speed; Generalization and serialization of ultrasonic tool handles; since most of the forming force monitoring equipment is a separate desktop piezoelectric force measuring instrument, which is not integrated with the ultrasonic vibration system, the setting of ultrasonic parameters cannot be adjusted in real time according to the actual needs of processing

Furthermore, incremental forming technology has great limitations in forming large-angle parts, and for materials such as magnesium alloys and titanium alloys that are difficult to form at room temperature, it has not been possible to find a simple and inexpensive heating method to process magnesium Difficult-to-form materials such as alloys and titanium alloys

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